Date: Fri, 1 Jun 2012 17:30:39 +0530 From: "Desai, Kashyap" <Kashyap.Desai@lsi.com> To: "freebsd-scsi@freebsd.org" <freebsd-scsi@freebsd.org>, "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org> Cc: "McConnell, Stephen" <Stephen.McConnell@lsi.com> Subject: Kernel panic in FreeBSD-8.3 from UFS Message-ID: <B2FD678A64EAAD45B089B123FDFC3ED72B9F6C1F79@inbmail01.lsi.com>
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Hi,
We have seen kernel panic while doing IO along with HBA reset. This looks t=
o be very rare but not sure if someone can help me to understand what is a =
issue here. To me it does not look any issue with underline Device Driver <=
mps>=20
See below back trace.
#0 doadump (textdump=3D1) at pcpu.h:244
244 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) #0 doadump (textdump=3D1) at pcpu.h:244
#1 0xc0a1845a in kern_reboot (howto=3D260)
at /usr/src/sys/kern/kern_shutdown.c:442
#2 0xc0a186f1 in panic (fmt=3DVariable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:607
#3 0xc0c7ceda in kmem_malloc (map=3D0xc15c808c, size=3D32768, flags=3D2)
at /usr/src/sys/vm/vm_kern.c:334
#4 0xc0c708e7 in page_alloc (zone=3D0x0, bytes=3D32768, pflag=3D0xf19839bf=
"\002",=20
wait=3D2) at /usr/src/sys/vm/uma_core.c:994
#5 0xc0c72fe0 in uma_large_malloc (size=3D32768, wait=3D2)
at /usr/src/sys/vm/uma_core.c:3067
#6 0xc0a04fac in malloc (size=3D32768, mtp=3D0xc102b808, flags=3D2)
at /usr/src/sys/kern/kern_malloc.c:492
#7 0xc0c42e89 in softdep_disk_io_initiation (bp=3D0xdef881fc)
at /usr/src/sys/ufs/ffs/ffs_softdep.c:10126
#8 0xc0c5208f in ffs_geom_strategy (bo=3D0xc5fc30ac, bp=3D0xdef881fc)
at buf.h:411
#9 0xc0c65a43 in ufs_strategy (ap=3D0xf1983b00)
at /usr/src/sys/ufs/ufs/ufs_vnops.c:2317
#10 0xc0d6a6dd in VOP_STRATEGY_APV (vop=3D0xc102e4a0, a=3D0xf1983b00)
at vnode_if.c:2171
#11 0xc0a8d19e in bufstrategy (bo=3D0xc6b901bc, bp=3D0xdef881fc) at vnode_i=
f.h:940
#12 0xc0a9352e in bufwrite (bp=3D0xdef881fc) at buf.h:404
#13 0xc0a8db5c in vfs_bio_awrite (bp=3D0xdef881fc) at buf.h:392
#14 0xc0c584c5 in ffs_syncvnode (vp=3D0xc6b90110, waitfor=3D1)
at /usr/src/sys/ufs/ffs/ffs_vnops.c:288
#15 0xc0c58739 in ffs_fsync (ap=3D0xf1983c4c)
at /usr/src/sys/ufs/ffs/ffs_vnops.c:187
#16 0xc0d69712 in VOP_FSYNC_APV (vop=3D0xc102dfc0, a=3D0xf1983c4c)
at vnode_if.c:1267
#17 0xc0ab5d49 in sys_fsync (td=3D0xc64ea8a0, uap=3D0xf1983cec) at vnode_if=
.h:549
#18 0xc0d49315 in syscall (frame=3D0xf1983d28) at subr_syscall.c:131
#19 0xc0d32af1 in Xint0x80_syscall ()
at /usr/src/sys/i386/i386/exception.s:266
#20 0x00000033 in ?? (
To me it looks like UFS is doing something to crash the kernel.
` Kashyap
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